Improvement in bottoms for chairs



E. SAVDRAL.

v Bottoms for Chairs.

N0 157 028 Patented Nov.1 7,1874.

Whuwmem:

THE GRAPHIC CO. PHOTO -L|TH,39I 4-! PARK PLACQMY,

tion

UNITED STATES,

PATENT OFFICE.

EDVARD SAVORAL, on NEW YORK, N. Y.

IMPROVEMENT IN BOTTOMS FOR CHAIRS.

Specification forming part of Letters Patent No. 157,028, dated November17, 174 application filed March 26, 1874.

To all whom it may concern Be it known that I, Envnnn SAVORAL, of NewYork, in the county and State of New York, have invented an Improvementin the Bottoms and other parts of Chairs and other seats, of which thefollowing is a specifica- M y invention relates to certain improvements,whereby a simple, cheap, and durable elastic metallic seat is obtained.The invention consists in a bottom, back, or other part of a chair orother seat, composed of a series of rings or bands of circular orapproximate form, connected laterally, at suitable intervals, byflexible arched braces or binders.

In the accompanying drawing, Figure 1 is a top view of my invention.Figs. 2 and 3 are vertical sections, the former through the line as 00,and the latter through the line y y, of Fig. l.

This structure for chair and other seats may be made of sheet metal,preferably of a single piece, although, if desired, it may be made ofmore than one. The drawing represents it as made of a single piece ofsheet metal, A, having concentric circular intermitted openings a a cutin it to form a solid central portion, B, of suitable dimensions,surrounded by concentric rings or bands 0, connected laterally, atsuitable intervals, by braces, which form the intermissions of thecircular openings at a.

These braces are made of arched form in their cross-section, as shown inFigs. 1 and 2, to give the proper degree of elasticity to the seat, andallow it to rise and fall without buckling or crushing, the arching ofthe braces allowing them to bend with sufficient facility.

When made in this form it is stamped out at one or more operations bymeans of suitable dies, and the conoavo convex form is imparted duringthe process of stamping.

Instead of being concentric circles, or parts thereof, as shown, therings or bands 0 may be of convolute form, or of any other formapproximating to that of a circle.

When made of several pieces, the arched connecting-braces D may beattached in any suitable manner, and the arches may extend upward ordownward, according to whether the seat is to be upholstered or not.

What I claim as new, and desire to secure by Letters Patent, is

A chair-seat having the concentric intermitted openings a, circular orapproximately formed rings or bands 0, and flexible arched braces orbinders D, the whole being constructed substantially as herein shown anddescribed.

wEDVARD SAVORAL. Witnesses:

MICHAEL RYAN, BENJAMIN W. HOFFMAN.

